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Attention Deficit/Hyperactivity Disorder (ADHD): Signs, Symptoms, & Treatments

Published: December 12, 2022 Updated: March 15, 2023
Published: 12/12/2022 Updated: 03/15/2023
Headshot of Matthew Edelstein, Psy.D, BCBA-D
Written by:

Matthew Edelstein

Psy.D, BCBA-D
Headshot of Trishanna Sookdeo, MD, MPH, FAAFP
Reviewed by:

Trishanna Sookdeo

MD, MPH, FAAFP
  • What Is ADHD?Definition
  • Symptoms of ADHDSymptoms
  • Types of ADHDTypes
  • Signs of ADHD In ChildhoodChildhood
  • Signs of ADHD In AdolescenceAdolescence
  • Signs of ADHD In AdulthoodAdulthood
  • What Causes ADHD?Causes
  • How Is ADHD Diagnosed?Diagnosis
  • Treatment of ADHDTreatment
  • ADHD StatisticsStatistics
  • Living With ADHD: Coping & Managing SymptomsCoping
  • Rating Scales & Checklists For ADHDQuizzes
  • Final Thoughts on ADHDConclusion
  • Additional ResourcesResources
Headshot of Matthew Edelstein, Psy.D, BCBA-D
Written by:

Matthew Edelstein

Psy.D, BCBA-D
Headshot of Trishanna Sookdeo, MD, MPH, FAAFP
Reviewed by:

Trishanna Sookdeo

MD, MPH, FAAFP

Among the most commonly diagnosed neurodevelopmental disorders, attention-deficit/hyperactivity disorder (ADHD) features a pattern of inattention and/or hyperactivity that interferes with functioning or development. Typically identified in childhood, symptoms of ADHD need to be evident across multiple settings and caregivers to be confirmed.1 While individuals with ADHD are often impacted throughout their lives, symptoms can be managed with behavior therapy and/or medication.

Evidence has shown that online therapy can be effective in the treatment of ADHD symptoms. BetterHelp can connect you with a licensed, experienced therapist to help you manage your ADHD symptoms and reduce any negative impact on your life and relationships. Online therapy with BetterHelp starts at $60 per week. Complete a brief questionnaire and get matched with the right therapist for you.

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What Is ADHD?

Attention-deficit/hyperactivity disorder requires the presence of symptoms related to inattention, hyperactivity/impulsivity, or both.2 It’s important to note that, in isolation, any of the characteristics of the disorder can be observed throughout typical childhood development. In order to meet criteria for ADHD, symptoms must be present for at least 6 months and significantly impact academic, social, and adaptive abilities (though some may be higher-functioning).1

It should be strongly noted that individuals with ADHD are not all impacted in their ability to pay attention. More accurately, these individuals are attending to the wrong things in the environment. They can be experts in putting together puzzles, building Legos, or playing video games (experiencing time blindness when doing activities they enjoy).

Deficits often lie primarily in sustained focus in situations and events that don’t pique their intrinsic interests or result in immediate rewards.

Symptoms of ADHD

ADHD Symptoms and signs are usually first observed in childhood (i.e., before age 12). These children often display difficulties with persistence in the face of challenging tasks, excessive motor activity (hyperactivity), and in thinking through the consequences of their actions impulsivity), though symptoms are sometimes less obvious when it comes to ADHD in girls.

With regard to impulsive behaviors, individuals with ADHD are best described as having “ready, fire, aim” behaviors; they often act without thinking about the impact of their behaviors, demonstrating poor foresight and planning. These behaviors may be the product of an underlying inability or intolerance to delay gratification.

Types of ADHD

Types of ADHD include ADHD with predominantly inattentive presentation, ADHD with predominantly hyperactive/impulsive presentation, and ADHD with combined presentation.

The three types of ADHD are:

1. ADHD With Predominantly Inattentive Presentation

Individuals meeting diagnostic criteria for the inattentive ADHD type present with fewer symptoms of hyperactivity.

Inattentive symptoms typically manifest in some or all of the following ways:1

  1. Difficulty with close attention to detail across multiple contexts, resulting in frequent mistakes and creating a negative impact on work productivity (e.g., at school, work, or during non preferred leisure activities)
  2. Difficulty maintaining attention in non preferred tasks or activities. Examples include challenges remaining on-task during reading tasks or lengthy conversations.
  3. Demonstrates “wandering attention” even without the presence of clear distractions in the environment
  4. Difficulty following through with tasks (preferred or nonpreferred). These individuals may often start projects with relative ease but fail to complete them.
  5. Challenges related to organization; including completing multiple-step actions, time management, and keeping things in order
  6. Avoidance of tasks that require persistence of mental effort (e.g., completion of homework, lengthy forms, or monotonous review of information)
  7. Difficulty holding onto things necessary for task completion (e.g., eyeglasses, car keys, cellphone, wallet, etc.)
  8. Easily distracted by stimuli in the environment (includes fleeting, unrelated thoughts)
  9. Forgetful during activities of daily living (e.g., routine chores, errands, returning calls, keeping appointments)

2. ADHD With Predominantly Hyperactive/Impulsive Presentation

Individuals meeting diagnostic criteria for this subtype of ADHD have significant difficulty with behavioral excess (i.e., behaviors that are more overt, and at times, socially stigmatizing).

Hyperactive and/or impulsive symptoms typically manifest in some or all of the following ways:1

  1. Frequent fidgeting or tapping with hands or feet; squirming in seat
  2. Inability to remain seated during times when doing so is expected (e.g., while working in a classroom or office)
  3. Excessive motor activity (e.g., running, climbing, restlessness) in situations where it may be inappropriate
  4. Difficulty engaging in quiet leisure activities (e.g. private reading in a library)
  5. Behavior characterized as being “driven by a motor” (e.g., unable to remain still for an extended period of time)
  6. Excessive talking
  7. Inability to inhibit one’s own communicative behavior (e.g., blurts out answers to questions, difficulty waiting for one’s turn in conversation)
  8. Interrupts or intrudes on others (e.g., takes over others’ activities, uses others’ things or invades others’ space without asking)

3. ADHD With Combined Presentation

Individuals meeting diagnostic criteria for this subtype demonstrate significant symptoms in both inattentive and hyperactive/impulsive categories.1

Signs of ADHD In Childhood

Although not specific to ADHD exclusively, children with ADHD can also present with mild delays in language, motor, or social development.1 Many parents first report excessive motor activity when their child is a toddler, but these symptoms can often be difficult to distinguish from typical development before age four. Most commonly, ADHD is diagnosed during elementary school years (ages 5-7) where symptoms of inattention become more impairing.

Signs of ADHD In Adolescence

Symptoms of impulsivity, excessive activity levels, and poor focus tend to be stable throughout early adolescence. For many individuals, hyperactive behaviors tend to lessen as they age and give way to fidgeting, impatience, and/or general restlessness.

Adolescents with ADHD tend to demonstrate more educational difficulties, including more failing grades and a higher chance of dropping out of school, than their neurotypical peers. They also have more difficulty in their relationships with peers, teachers, siblings, and parents.3

Signs of ADHD In Adulthood

As adolescents develop into adulthood, research suggests a reduction in core symptoms of ADHD.4 Some symptoms and signs of adult ADHD, such as qualities of poor planning and inattention, tend to persist throughout their lifetime. Older individuals who continue to meet criteria for ADHD tend to have more problems with adjustment and poorer mental health than comparison groups.

These adults also continue to have difficulty with impulsivity, which can lead to financial and/or legal problems (i.e. these individuals are more likely to switch jobs, get speeding tickets, and have driving accidents).

However, some research has demonstrated that adults who were hyperactive youngsters end up using their energy more adaptively; many may work multiple jobs, choose jobs that are more active, and/or work longer hours. In this way, the aimlessness of childhood restlessness has given way to more purposeful activity-seeking in adulthood.

Additional ADHD Criteria

As some adults who present to physicians and mental health professionals have not previously been diagnosed in childhood, additional criteria beyond medical history have been suggested. It should be noted that each criterion is only met if the behavior occurs more frequently and is more impairing than individuals with the same developmental age.

These criteria include:4

  1. Sense of underachievement/low self-esteem
  2. Difficulty getting organized
  3. Chronic procrastination
  4. Trouble with follow-through on tasks
  5. Tendency to speak one’s mind, with little insight into the timing or appropriateness of the remark
  6. Frequent search for high stimulation
  7. Intolerance for boredom
  8. High distractibility
  9. Often creative, intuitive, and highly intelligent
  10. Difficulty following “proper” procedure
  11. Low tolerance for frustration
  12. Impulsive
  13. Tendency to work endlessly
  14. Sense of insecurity or worry
  15. Mood swings
  16. Restlessness
  17. Tendency toward addictive behavior

Current research suggests that attention-deficit/hyperactivity disorders is a chronic condition, with approximately half of children continuing to exhibit symptoms and impairment into adulthood. ADHD is also associated with other types of psychiatric disorders, including oppositional defiant disorder (ODD), conduct disorder, mood and anxiety disorders, and substance use disorders.5

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What Causes ADHD?

The causes of ADHD include brain structure, brain chemicals, genetics, and environment.

Causes of ADHD include:

Structural Brain Causes

ADHD has been noted to affect about 5% of children, with up to 65% having symptoms persist into adulthood. Use of anatomic studies (MRI/FMRI) suggest atypical brain structures among individuals with ADHD. Most notably, scans have shown overall decreases in brain volume, with particular affected areas including the prefrontal cortex, basal ganglia, cerebellum, and parieto-temporal regions.6, 7

In addition, longitudinal studies suggest that young children have delays in prefrontal cortical development. The impact of these affected areas in the brain is thought to manifest as delays in cognitive processing, including working memory, as well as motor and attention planning.6, 7

Chemical Brain Causes

Additional research has implicated several biological bases for the symptoms of ADHD, including deficits in the reward/motivational centers of the brain also known as the dopamine pathway. Specifically, brain neuroimaging studies have demonstrated disruption in the dopamine pathway, which is hypothesized to be linked to core symptoms of attention and impulsivity.8

Genetic Causes

Is ADHD genetic? Previous familial research has established that childhood and adult ADHD is highly heritable, with estimates around 40% heritability. Family studies suggest that there is a high risk for ADHD among first-degree relatives, particularly those for whom symptoms persist into adulthood.9

However, genetic research has been unable to identify specific genes that are responsible for conferring heritability in families. ADHD is not associated with specific physical features, though subtle motor delays and neurological signs may occur.9

Environmental Causes

There have been some environmental factors linked to increased likelihood for diagnosis of ADHD. Specifically, a low birthweight (less than three pounds) increases the risk for ADHD by two-three times. It should be noted that most children with below-average birth weight do not go on to develop ADHD.9

There have been some connections between environmental toxins and a later ADHD diagnosis, including lead exposure, alcohol exposure, and smoking during pregnancy.9

What Does NOT Cause ADHD

Despite some assertions by past research and non-experts, ADHD is not caused by poor parenting, refined sugar, food additives/allergies, video games, or technology.

How Is ADHD Diagnosed?

Attention-deficit/hyperactivity disorder can be reliably diagnosed in children, adolescents, and adults using the criteria set forth in the Diagnostic and Statistical Manual of Mental Disorders, Fifth Edition (DSM-5).1 However, these criteria were derived from children and young adults and not specifically targeted toward adults.

Qualified medical professionals who are best equipped to diagnose ADHD, including physicians (psychiatrists, pediatricians, neurologists) and clinical psychologists. Social workers, nurse practitioners, school psychologists, and other licensed therapists (professional counselors, marriage and family therapists, etc.) can be helpful with initial screenings for the disorder and can provide referrals for a formal diagnosis.

The clinical diagnosis of ADHD is often made by assessing patient symptoms, severity of impairment, comorbidity (presence of other symptoms), family history, and psychosocial stressors. Pediatric evaluations typically consist of interviews with the patient and caregiver, behavioral observations, and a review of school, medical, and/or neuropsychological testing.

Evidence has shown that online therapy can be effective in the treatment of ADHD symptoms. BetterHelp can connect you with a licensed, experienced therapist to help you manage your ADHD symptoms and reduce any negative impact on your life and relationships. Online therapy with BetterHelp starts at $60 per week. Complete a brief questionnaire and get matched with the right therapist for you.

Choosing Therapy partners with leading mental health companies and is compensated for marketing by BetterHelp

Visit BetterHelp

Treatment of ADHD

Behavior therapy has been identified over the last 20 years as being an evidence-based treatment for ADHD.10 Behavioral strategies, grounded in learning theory, includes a focus on procedures wherein parents and/or caregivers are trained to use specific strategies to increase desired behaviors (e.g., compliance, organization) and decrease undesirable behaviors (e.g., noncompliance, disruptions).

Several meta-analyses over the last decade have established that behavioral treatments result in moderate to substantial improvement for children who engage in a variety of disruptive and noncompliant behaviors.10 These types of therapies can be provided by licensed psychologists, social workers, and counselors with the appropriate educational background and training.

Numerous systematic reviews show that up to 70% of children respond well to stimulant medications, with short-term improvement in ADHD symptoms related to inattention and hyperactivity/impulsivity.11 Stimulant medications typically used to treat these symptoms include Methylphenidate (brand names: Ritalin, Quillivant, QuilliChew, Metadate, Concerta), Dextroamphetamine + Amphetamine (brand name: Adderall) and Dextroamphetamine (brand name: Dexedrine).

Additional types of medication for ADHD symptoms include atomoxetine (brand name: Strattera), an FDA-approved alternative to stimulant medication which replaces certain neurotransmitters in the brain, and guanfacine (brand name: Tenex), which is a blood pressure medication that is often prescribed off-label to treat ADHD.

ADHD medication side effects include nervousness, insomnia, dry mouth, loss of appetite, constipation, and tachycardia. While a pediatrician is qualified to prescribe these medications, many will refer families to a specialist (i.e. developmental pediatricians and/or psychiatrists) for ongoing medication management. You should always discuss your symptoms and medical history with your prescribing doctor to determine whether stimulants vs. non-stimulants are the best treatment option for you.

ADHD Statistics

Attention-deficit/hyperactivity disorder is among the most common neurobehavioral disorders in children. ADHD affects an estimated 4% – 12% of school-aged children worldwide.12 In addition, data suggests that up to 5% of college-aged students and adults meet criteria for ADHD.

The disorder is more frequent in males vs. females, with a ratio of 2:1 in children and 1.6:1 in adults.1 In addition, females are more likely than males to present primarily with inattentive features.

Living With ADHD: Coping & Managing Symptoms

As ADHD is a chronic condition, many individuals with the diagnosis have ongoing difficulties throughout their lifetime, including potential for ADHD & depression.3 For those taking medication, it may become clear that symptoms shift with changes in the environment requiring ongoing management of dosages and types.

Younger children may require educational and/or behavioral support at school, including an IEP or 504 plans. Adolescents and adults living with ADHD may consider informing administrators or employers about an ADHD diagnosis for accommodations to increase productivity.

Aside from more formal accommodations, individuals with ADHD can take measures on their own to support skills deficits. Common strategies to manage symptoms include note-taking to address working memory deficits, structured scheduling to avoid procrastination, and use of technology and planners to support difficulty with organization.

There are some games and exercises that purport to improve memory and attention, ranging from crossword puzzles and Sudoku to more expensive options like Lumosity© or BrainHQ©, though these activities do not claim to treat specific diagnoses.

Rating Scales & Checklists For ADHD

The following scales and checklists are used to help clinicians gather information on symptoms and functioning. Responses to these questionnaires are not sufficient by themselves to arrive at a diagnosis of ADHD, but can be an important component of the evaluation process:

  • Child Behavior Checklist (CBCL): Identifies problem behavior in children ages 6-18 years. Includes possible diagnoses as well as internalizing/externalizing problems
  • Conners’ Rating Scales
  • Teacher Rating Scale: Revised, provides information from teachers on subscales relating to oppositional problems, cognitive problems, hyperactivity, and an ADHD-index
  • Parent Rating Scale -Revised
  • Adolescent Self-Report Scale
  • Vanderbilt ADHD Rating Scales (VADRS)
  • Parent Rating Scale: Gathers information on caregivers’ perspective of social functioning and school performance
  • Teacher Rating Scale: Provides information on school performance and ADHD symptoms
  • ADHD Rating Scale-IV (ADHD-RS-IV): Includes separate forms for parents/caregivers and teachers; divided into subscales for hyperactivity/impulsivity and inattentiveness

Final Thoughts on ADHD

If you or a loved one are dealing with ADHD, you don’t have to suffer through unwanted symptoms on your own. A therapist who specializes in ADHD can help you manage any negative effects, and medication can be a positive addition for many with ADHD. Talk to your primary care doctor or a licensed therapist and get the help you deserve.

Additional Resources

Education is just the first step on our path to improved mental health and emotional wellness. To help our readers take the next step in their journey, Choosing Therapy has partnered with leaders in mental health and wellness. Choosing Therapy may be compensated for marketing by the companies mentioned below.

ADHD Management Tools

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For Further Reading

While only a professional can diagnose and treat Attention-Deficit/Hyperactivity Disorder, there are several organizations that can provide support and guidance.

These include:

  • Children and Adults with Attention-Deficit/Hyperactivity Disorder (CHADD)
  • Attention Deficit Disorder Association (ADDA)
  • American Psychological Association (APA)
  • ADHD Online
12 sources

Choosing Therapy strives to provide our readers with mental health content that is accurate and actionable. We have high standards for what can be cited within our articles. Acceptable sources include government agencies, universities and colleges, scholarly journals, industry and professional associations, and other high-integrity sources of mental health journalism. Learn more by reviewing our full editorial policy.

  • Diagnostic and Statistical Manual of Mental Disorders, Fifth Edition. Arlington, VA: American Psychiatric Association, 2013

  • Anderson, J.C., Williams, S., McGee, R., Silva, P.A. (1987). DSM III disorders in preadolescent children. Prevalence in a large sample from the general population. Archives of General Psychiatry, 44(1), 69-76.

  • Biederman, J., Monuteaux, M., Mick, E, et al. (2006). Young adult outcome of attention deficit hyperactivity disorder: a controlled 10-year follow-up study. Psychological Medicine. 36(2), 167-179.

  • Weiss, M., Hechtman, L.T., & Weiss, G. In ADHD in Adulthood: A guide to current theory, diagnosis, and treatment (1999). Johns Hopkins University Press: Baltimore, MD.

  • Bird, H.R., Gould, M.S., Staghezza, B.M. (1993). Patterns of diagnostic comorbidity in a community sample of children aged 9-16 years. Journal of American Academy of Child and Adolescent Psychiatry, 32(2), 361-368.

  • Valera, E.M., Faraone, S.V., Murray, K.E., Seidman, L.J. (2007). Meta-analysis of structural imaging findings in attention-deficit/hyperactivity disorder. Biological Psychiatry, 61, 1361-1369.

  • Friedman, L.A., Rapoport, J.L. (2015). Brain development in ADHD. Current Opinion in Neurobiology, 30, 106-111.

  • Volkow, N.D., Wang, G., Kollins, S.G. et al. (2009). Evaluating dopamine reward pathway in ADHD: clinical applications, JAMA, 302(10), 1084-1091.

  • Larsson, J.O., Larsson, H., Lichtenstein, P. (2004). Genetic and environmental contributions to stability and change of ADHD symptoms between 8 and 13 years of age: a longitudinal twin study, 1267-1275.

  • Fabiano, G.A., Pelham, W.E., Coles, E.K., Gnagy, E.M., Chronis-Tuscano, A., O’Connor B.C. (2009). A meta-analysis, of behavioral treatments for attention-deficit/hyperactivity disorder, Clinical Psychology Review, 29(2), 129-140.

  • Clinical Practice Guideline: treatment of the school aged child with attention deficit/hyperactivity disorder (2002), Pediatrics, 63(12), 16-22.

  • Spencer, T.J., Biederman, J., Wilens, T.E., Faraone, S.V. Novel treatments for attention-deficit/hyperactivity disorder in children, Journal of Clinical Psychiatry, 63(12), 16-22.

update history

We regularly update the articles on ChoosingTherapy.com to ensure we continue to reflect scientific consensus on the topics we cover, to incorporate new research into our articles, and to better answer our audience’s questions. When our content undergoes a significant revision, we summarize the changes that were made and the date on which they occurred. We also record the authors and medical reviewers who contributed to previous versions of the article. Read more about our editorial policies here.

  • Originally Published: July 7, 2020
    Original Author: Matthew Edelstein, Psy.D, BCBA-D
    Original Reviewer: Trishanna Sookdeo, MD, MPH, FAAFP

  • Updated: December 12, 2022
    Author: No Change
    Reviewer: No Change
    Primary Changes: Updated for readability and clarity. Reviewed and added relevant resources.

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  • What Is ADHD?Definition
  • Symptoms of ADHDSymptoms
  • Types of ADHDTypes
  • Signs of ADHD In ChildhoodChildhood
  • Signs of ADHD In AdolescenceAdolescence
  • Signs of ADHD In AdulthoodAdulthood
  • What Causes ADHD?Causes
  • How Is ADHD Diagnosed?Diagnosis
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  • Final Thoughts on ADHDConclusion
  • Additional ResourcesResources
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Privacy & Cookies Policy

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